/* === Reset & Base === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #0b0f14;
  --bg-secondary: #0e1219;
  --bg-tertiary: #151b25;
  --bg-card: #111723;
  --bg-terminal: #080c11;
  --border: #1a2233;
  --border-hover: #283548;
  --text-primary: #c4cdd8;
  --text-secondary: #6b7a8d;
  --text-dim: #3d4a5c;
  --accent-blue: #4d94e6;
  --accent-cyan: #2dd4bf;
  --accent-green: #22c55e;
  --accent-yellow: #eab308;
  --accent-red: #ef4444;
  --accent-purple: #a78bfa;
  --glow-cyan: rgba(45, 212, 191, 0.06);
  --glow-blue: rgba(77, 148, 230, 0.06);
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius: 6px;
  --radius-lg: 8px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 64px;
  font-size: 18px;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  background-image:
    linear-gradient(rgba(45, 212, 191, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 212, 191, 0.018) 1px, transparent 1px);
  background-size: 48px 48px;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color 0.15s;
}

a:hover {
  color: #5eeadb;
}

code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-tertiary);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  color: var(--accent-cyan);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* === Navigation === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 15, 20, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  height: 64px;
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.2rem;
}

.nav-logo:hover {
  color: var(--text-primary);
}

.nav-logo-icon {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  color: var(--text-dim);
  font-size: 0.82rem;
  font-weight: 500;
  font-family: var(--font-mono);
  padding: 6px 12px;
  border-radius: 6px;
  transition: all 0.15s;
}

.nav-links a:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.nav-github {
  padding: 6px 14px !important;
  border: 1px solid var(--border) !important;
  border-radius: 6px !important;
}

.nav-github:hover {
  border-color: var(--accent-cyan) !important;
  color: var(--accent-cyan) !important;
  background: transparent !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: all 0.3s;
}

/* === Hero === */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  padding: 100px 0 48px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 20% 30%, rgba(45, 212, 191, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 50%, rgba(77, 148, 230, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero-text {
  text-align: left;
}

.hero-badge {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 16px;
  background: rgba(45, 212, 191, 0.06);
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 10px;
  letter-spacing: -0.04em;
}

.hero-title-accent {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
}

.hero-tagline {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 500;
  font-family: var(--font-mono);
  margin-bottom: 14px;
}

.hero-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 460px;
  line-height: 1.6;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: all 0.15s;
  border: none;
}

.btn-primary {
  background: var(--accent-cyan);
  color: #0b0f14;
}

.btn-primary:hover {
  background: #5eeadb;
  color: #0b0f14;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: none;
}

.btn-secondary:hover {
  background: var(--border);
  color: var(--text-primary);
  transform: translateY(-1px);
}

/* === Hero Terminal === */
.hero-terminal {
  width: 100%;
  text-align: left;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-terminal);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 16px;
  background: var(--bg-tertiary);
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-dot--red { background: #ef4444; }
.terminal-dot--yellow { background: #eab308; }
.terminal-dot--green { background: #22c55e; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  margin-left: 6px;
}

.terminal-body {
  background: var(--bg-terminal);
  padding: 18px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  min-height: 100px;
}

.terminal-line {
  display: flex;
  align-items: center;
  gap: 7px;
}

.terminal-prompt {
  color: var(--accent-green);
  user-select: none;
}

.terminal-cmd {
  color: var(--text-primary);
}

.terminal-cursor {
  color: var(--accent-cyan);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.terminal-output {
  margin-top: 6px;
  color: var(--text-secondary);
  white-space: pre-wrap;
}

/* === Sections === */
.section {
  padding: 56px 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-title {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.section-title::before {
  content: '// ';
  color: var(--text-dim);
  font-weight: 400;
}

.section-subtitle {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 32px;
  font-family: var(--font-mono);
}

/* === Features === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.feature-card {
  background: var(--bg-card);
  padding: 22px;
  border-radius: var(--radius-lg);
  transition: background 0.15s;
}

.feature-card:hover {
  background: var(--bg-tertiary);
}

.feature-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  color: var(--accent-cyan);
  opacity: 0.7;
}

.feature-icon svg {
  width: 20px;
  height: 20px;
}

.feature-card h3 {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.feature-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* === Scanners === */
.scanners-grid {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.scanner-card {
  background: var(--bg-card);
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--bg-tertiary);
  transition: all 0.15s;
}

.scanner-card:hover {
  background: var(--bg-tertiary);
  border-left-color: var(--accent-cyan);
}

.scanner-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.scanner-name {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

.badge {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
}

.badge-kernel {
  background: rgba(77, 148, 230, 0.1);
  color: var(--accent-blue);
}

.badge-process {
  background: rgba(167, 139, 250, 0.1);
  color: var(--accent-purple);
}

.badge-network {
  background: rgba(45, 212, 191, 0.1);
  color: var(--accent-cyan);
}

.badge-group {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.scanner-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 8px;
}

.scanner-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.scanner-req code {
  font-size: 0.75rem;
}

.scanner-severity {
  display: flex;
  align-items: center;
  gap: 5px;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
}

.dot-info { background: var(--accent-blue); }
.dot-warning { background: var(--accent-yellow); }
.dot-critical { background: var(--accent-red); }

/* === Usage === */
.usage-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}

.usage-block h3 {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.terminal-block {
  background: var(--bg-terminal);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.terminal-block pre {
  padding: 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.6;
}

.terminal-block code {
  background: none;
  padding: 0;
  font-size: inherit;
  color: var(--text-primary);
}

.terminal-block--compact pre {
  padding: 14px;
}

.t-prompt { color: var(--accent-green); user-select: none; }
.t-cmd { color: var(--text-primary); }
.t-comment { color: var(--text-dim); }
.t-header { color: var(--accent-blue); font-weight: 600; }
.t-dim { color: var(--text-dim); }
.t-ok { color: var(--accent-green); font-weight: 600; }
.t-warn { color: var(--accent-yellow); font-weight: 600; }
.t-crit { color: var(--accent-red); font-weight: 600; }
.t-str { color: var(--accent-cyan); }
.t-num { color: var(--accent-yellow); }
.t-kw { color: var(--accent-purple); }

/* === Exit Codes === */
.exit-codes {
  max-width: 700px;
  margin: 0 auto;
}

.exit-codes h3 {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  margin-bottom: 14px;
  color: var(--text-secondary);
}

.exit-codes-grid {
  display: flex;
  gap: 8px;
}

.exit-code {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
}

.exit-code-num {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  min-width: 30px;
  text-align: center;
}

.exit-code--ok { color: var(--accent-green); }
.exit-code--findings { color: var(--accent-yellow); }
.exit-code--error { color: var(--accent-red); }

.exit-code-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* === Architecture === */
.arch-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.arch-card {
  background: var(--bg-card);
  padding: 22px;
  border-radius: var(--radius-lg);
  transition: background 0.15s;
}

.arch-card:hover {
  background: var(--bg-tertiary);
}

.arch-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-cyan);
  font-weight: 700;
  margin-bottom: 8px;
  opacity: 0.6;
}

.arch-card h3 {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.arch-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 12px;
}

.arch-flow {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.arch-flow-step {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  background: rgba(45, 212, 191, 0.06);
  padding: 4px 12px;
  border-radius: 4px;
}

.arch-flow-arrow {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.severity-legend {
  display: flex;
  gap: 16px;
  margin-top: 4px;
}

.severity-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* === Installation === */
.install-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.install-step {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.install-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: rgba(45, 212, 191, 0.08);
  color: var(--accent-cyan);
  font-size: 0.72rem;
  font-weight: 700;
  font-family: var(--font-mono);
  margin-bottom: 10px;
}

.install-step h3 {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.install-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.install-list li {
  color: var(--text-secondary);
  padding-left: 14px;
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.install-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-cyan);
  opacity: 0.5;
}

/* === Footer === */
.footer {
  padding: 32px 0 20px;
  background: var(--bg-secondary);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  margin-bottom: 20px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-brand .nav-logo-icon,
.footer-brand .nav-logo-text {
  display: inline;
}

.footer-brand .nav-logo-text {
  font-weight: 700;
  font-size: 1.1rem;
}

.footer-tagline {
  color: var(--text-dim);
  font-size: 0.78rem;
  font-family: var(--font-mono);
}

.footer-links {
  display: flex;
  gap: 48px;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.footer-col a {
  color: var(--text-dim);
  font-size: 0.82rem;
  transition: color 0.15s;
}

.footer-col a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  padding-top: 14px;
  color: var(--text-dim);
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

/* === Responsive === */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .install-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  html {
    font-size: 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: 8px 24px;
    gap: 0;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links li + li {
    border-top: 1px solid var(--border);
  }

  .nav-links a {
    display: block;
    padding: 10px 0;
    font-size: 0.9rem;
  }

  .nav-github {
    display: inline-block;
    margin-top: 4px;
    text-align: center;
  }

  .hero {
    padding: 80px 0 32px;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-text {
    text-align: center;
  }

  .hero-desc {
    margin: 0 auto 20px;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .features-grid,
  .usage-grid,
  .arch-grid,
  .install-grid {
    grid-template-columns: 1fr;
  }

  .exit-codes-grid {
    flex-direction: column;
    gap: 6px;
  }

  .section {
    padding: 36px 0;
  }

  .footer-inner {
    flex-direction: column;
    gap: 20px;
  }

  .footer-links {
    gap: 32px;
  }

  .hero-terminal {
    max-width: 100%;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.8rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }

  .section-title {
    font-size: 1.1rem;
  }

  .scanner-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .badge-group {
    justify-content: flex-start;
  }

  .container {
    padding: 0 16px;
  }
}